Chin strap buckle sleeve



FIG. 1 is a front, top right perspective view of a chin strap buckle sleeve showing our new design therefor;

FIG. 2 is a bottom, rear left perspective view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top, front view thereof

FIG. 6 is a top, rear view thereof

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plain view thereof; and,

FIG. 9 is a bottom, rear left perspective view thereof, with dotted lines showing how a buckle may be located in the chin strap buckle sleeve, the portion shown in dotted lines being included for illustrative purposes only, and forms no part of the claimed design. 

CLAIM The ornamental design for a chin strap buckle sleeve, as shown and described. 